Harry's friends with a poor kid. It's explained the reason he doesn't financially help him is the family is too proud to take money.
There's literally no reason for the wizard economy to have poverty though since you can make anything out of anything as it's been demonstrated multiple times.
There are magic slaves you can get for free basically.
The book talks all the time about revolution but nothing actually happens, Harry ends up becoming a wizard cop.
The girl who wants to free the magic slaves gives up on it and takes the compromise position in the government working with "magic creature affairs".
Harry doesn't even beat Voldemort, he just wins on a technicality based on an obscure rule.
It's worse than you think.